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Siemens 

Room temperature controllers  

CE1N3036en 

Building Technologies 

 

13.10.2008 

control of a gas-fired wall-hung boiler 

control of a gas-fired floor-standing boiler 

T

N1

Y1

2222

S

03

M1

 

 

Room temperature controller with direct 
control of a heating circuit pump (precontrol 
by manual mixing valve) 

 

 

F1 

Thermal reset limit thermostat 

F2 

Safety limit thermostat 

M1 Circulating 

pump

 

 

N1 

RDE20.1 room temperatures controller 

Y1 

3-port valve with manual adjustment 

Y2 Magnetic 

valve

 

 

Dimensions 

96

11

9

23,8

30

35M

01

 

 
 

89,45

 4

3035M

02

28

28

28

28

26

30

35

30

11

,8

11

2,

3

4

 

 

Controller 

Baseplate 

©

 2003 - 2008 Siemens Building Technologies AG 

Subject to change 

Summary of Contents for RDE20.1

Page 1: ...ing Operating modes normal operation and energy saving mode 7 day time switch and manual operation Battery powered DC 3 V Input for external temperature sensor Use The RDE20 1 is used for the control of the room temperature in heating systems Typical applications Apartments Commercial spaces Schools For the control of the following pieces of equipment Thermic valves or zone valves Gas or oil burne...

Page 2: ...on the display The setpoint can be readjusted by pressing buttons and When energy saving mode is activated symbol appears on the display The set point can be readjusted by pressing buttons and In energy saving mode the unit can also be switched to Off This is accomplished by selecting a setpoint of 5 C and then keeping button depressed for 4 seconds In that case the OFF will appear and the symbol ...

Page 3: ...es Ordering When ordering please give name and type reference room temperature controller RDE20 1 Sensor and valve actuators are to be ordered as separate items Equipment combinations Type of unit Type reference Data sheet Temperature sensor QAH11 1840 Room sensor QAA32 1747 Electromotoric actuator SFA21 4863 Electrothermal actuator for radiator valve STA21 4877 Electrothermal actuator for small v...

Page 4: ...ay from 1 Monday to 7 Sunday 4 Current switching pattern with flashing time pointer 5 symbol when actual room temperature is displayed 6 Normal operation Energy saving mode 7 symbol in automatic mode or when selecting the switching pattern 8 heating on 9 symbol indicating that batteries need to be replaced 10 Buttons for adjusting the setpoints the time of day and the switching times 11 Operating ...

Page 5: ... recalibrated For that purpose both buttons and must be pressed simultaneously for 3 seconds Then the temperature displayed can be changed by a maximum of 10 K by pressing the and but tons Five seconds after the last push of a button the controller will automatically return to the normal operational status The setpoint limitation is used in some specific applications where the setpoint tem peratur...

Page 6: ...trength Between relay contacts and coil AC 3750 V for 6 sec AC 2000 V for 60 sec Between relay contacts same pole AC 1000 V for 60 sec Switching differential SD 1 K Setpoint setting range 5 35 C normal operation 5 60 C with setpoint limitation 0 OFF and 5 35 C energy saving mode Factory setting normal operation 20 C Factory setting energy saving mode 8 C Resolution of settings and displays Setpoin...

Page 7: ...N 61000 6 3 Immunity domestic sector light ind EN 61000 6 1 Safety class II to EN 60730 Pollution degree 3 Degree of protection of housing IP30 to EN 60529 Weight 0 21 kg Colour of housing front white RAL 9003 Housing material ABS Slider POM LCD Lens GP PS Connection diagram Application examples T T F1 F2 N1 M1 Y2 2222S01 T T F1 F2 N1 M1 Y2 2222S02 T T Room temperature controller with direct Room ...

Page 8: ...th direct control of a heating circuit pump precontrol by manual mixing valve F1 Thermal reset limit thermostat F2 Safety limit thermostat M1 Circulating pump N1 RDE20 1 room temperatures controller Y1 3 port valve with manual adjustment Y2 Magnetic valve Dimensions 96 119 23 8 3035M01 89 45 4 3035M02 28 28 28 28 26 30 35 30 11 8 112 3 4 Controller Baseplate 2003 2008 Siemens Building Technologies...

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